Thermo-mechanical analysis of cold helium injection into gas storage tanks made of carbon steel following resistive transition of the LHC magnets

摘要

A resistive transition (quench) of the LHC sector magnets will be followed by cold helium venting to a quench buffer volume of 2000 m~3 at ambient temperature. The volume will be composed of eight medium-pressure (2 MPa) gas storage tanks made of carbon steel, which constrains the temperature of the wall to be higher than -50 ℃ (223 K). The aim of the analysis is the assessment of a possible spot cooling intensity and thermo-mechanical stresses in the tank wall following helium injection